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    <li class="active"><a href="http://www.imooc.com">慕课网</a></li>
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    <li><a href="http://www.taobao.com">淘宝</a></li>
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<ul class="nav nav-pills">
    <li class="active"><a href="http://www.imooc.com">慕课网</a></li>
    <li><a href="http://www.baidu.com">百度</a></li>
    <li><a href="http://www.taobao.com">淘宝</a></li>
</ul>
<ul class="nav nav-pills nav-justified">
    <li class="active"><a href="http://www.imooc.com">慕课网</a></li>
    <li><a href="http://www.baidu.com">百度</a></li>
    <li><a href="http://www.taobao.com">淘宝</a></li>
</ul>

<ul class="nav nav-pills nav-stacked">
    <li class="active"><a href="http://www.imooc.com">慕课网</a></li>
    <li><a href="http://www.baidu.com">百度</a></li>
    <li><a href="http://www.taobao.com">淘宝</a></li>
</ul>
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